配位

By virtue of the coordination of Cr2L (L = CO; PPh3; C3H5 BF4-) with N-vinylcarbazole, acenaphthylene and their derivatives as organic ligands, a series of organometallic complexes have been synthesized. Their spectra characterization and X-ray diffraction analysis have been performed. It is found that this kind of complexes possesses an electronic structure with highly extensive π- delocalization.

以N－乙烯基咔唑、苊烯及其衍生物作为配体与金属基团Cr2L(L = CO； PPh3； C3H5 BF4-)配位，合成了一系金属有机配合物，并对其进行了光谱表征和单晶X射线衍射分析，发现该类配合物具有高度离域的电子结构。

The results indicated that the Fe3+ ion of Fe-AO-PAN was coordinated with three amino nitrogen atoms and three hydroxyl oxygen atoms of three amidoxime units on the surface of AO-PAN by covalent bond, and the coordination number was six.

结果表明， Fe-AO-PAN中的Fe3+能够与AO-PAN表面三个偕胺肟链节单元的三个氨基氮原子和三个羟基氧原子进行配位反应，配位数为6。

These possible mechanisms for the synthetic reaction and thesubstitution reaction of α-hyperiodine group arsonium ylides were proposed.

将它与亲核试剂作用；产生α-硒代或α-硫代胂叶立德，提出了先配位后配体偶联的可能反应机理。

Based on studies of RCM reaction of 50 and CM reaction ofacrylonitrile with 1-octene or 1-decene catalyzed by pyridine derivative-coordinatedruthenium benzylidene complexes, it can be concluded that ruthenium benzylidene complexwith the more labile dissociating ligand exhibits the higher initial activity and better catalyticperformance.

吡啶衍生物配位的钌卡宾配合物催化含氰基烯烃50闭环交互置换反应和丙烯腈与1-辛烯、1-癸烯交叉交互置换反应表明，催化剂中吡啶衍生物配体越易解离，其初活性越高，催化活性越好。

The invention pertains to the field of chemical technology, which more particularly relates to a catalyst preparation method of Polystyrene by coordinating an type of bidentate ligand and a transition metal.

本发明属于化工技术领域，具体涉及一类型双齿配体与过渡金属配位的催化剂制备聚苯乙烯方法。

We introduce two pyridinedicarboxylate (2,5-H2pdc and 2,6-H2pdc) ligands, under hydrothermal or solvothermal condition, to yield 7 complexes with InCl3. Complex 17 presents a rare example of chiral binodal (4,8)-connected lattice with self-interpenetration.

选择了两种吡啶二羧酸配体： 2，5-吡啶二羧酸(2，5-H2pdc)； 2，6-吡啶二羧酸(2，6-H2pdc)和InCl3反应合成了七个配位化合物其中17表现了一例少有的手性的(4，8)连接的双节点自穿插拓扑结构。

The exo-cyclic tin atoms are five-coordinate and have coordination geometry of monocapped trigonal bipyramid with very similarly distorted mode.

有关该类化合物的晶体结构研究表明，中心锡原子的配位形式决定于直接与锡原子相连的烃基的结构和羧酸基配体的类型[8～ 10 ] 。

In the complex, the tin atom is hepta-coordinated in a distorted pentagonal bipyramid including a bridging pyridyl N atom, by which the one-dimensional infinite chain is formed.

结果表明，该化合物中锡原子配位数为7，处在畸变五角双锥配位场中，化合物通过吡啶基氮原子的桥连作用形成了一维无限链状结构。

In the crystal, the tin atoms are five-coordinated in trigonal bipyramidal structure by bridging pyridine N atoms, resulting in the chain organotin compound.

该化合物中心锡原子为五配位三角双锥构型，并且通过4-吡啶甲酸配体的氮原子桥联作用形成一维无限链状结构。

Our purpose is simulating the catalytical action of enzyme in biologic system, so we can directly investigate the factors relating to the functions of enzyme by studying the catalyzing behavior of model molecules imitating enzyme\'s functions. And it is a base of synthesizing high performance model enzyme.

从得到的实验数据我们可以看出：锌是酯水解反应的活性中心；并且金属中心相同时，配位数相同的配合物，结构越简单，其催化酯水解效果越好；含有配位不饱和金属中心的锌配合物表现出更好的催化效果；配合物中咪唑基团的存在可有效的增强这个配合物催化酯水解的效果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。